Jews in the Garden by Judy Rakowsky

Villages of Poland hide the lost secrets of World War II
1944: Heavy footfalls thud on the road on a rainy May night. A band of gunmen scour a hilltop farm, acting on rumors that it harbors a Jewish family. For 18 months, the Rozeneks have been hiding safely, but their luck is about to run out. Only one from the family of six will live to see the sunrise. Sixteen-year-old Hena Rozenek shelters in the woods until morning. . . and then she runs.
Forty years later: Holocaust survivor Sam Rakowski Ron has lived in the United States for decades, never thinking he could return to the Polish village he fled as a teenager. But now he's ready to talk about what he heard, what he saw, and what he knows about two separate families of cousins who were his neighbors, and presumably were killed during the war. The story Poland presents to the world is that Poles saved more Jews than citizens of any other nation, that any murders in Poland were committed by Nazis and Nazis alone. But Sam, while defending his countrymen, suspects a painful truth. The stories he shares with his younger cousin, Judy, an investigative journalist, send them off on a decades-long journey unlike any other to find out what happened to the Rozenek family and ultimately reveal the secrets the Polish government is still desperate to keep.
Jews in the Garden is aglobe-trotting detective story that turns investigative eyes and ears toward the hidden events in Poland during the Holocaust. Judy and Sam, the unlikeliest of sleuthing duos, knock on doors, petition court documents, seek clandestine meetings, and ultimately discover what really happened to the Jews in the garden next door."